With a slick surface and a semi-rough surface. I would say spread clear silicone caulk on the whole surface of the MDF. Clear silicone is great for sticking slick surfaces. Use a thin layer and then use a roller over the poster to work out any bubbles.
With a slick surface and a semi-rough surface. I would say spread clear silicone caulk on the whole surface of the MDF. Clear silicone is great for sticking slick surfaces. Use a thin layer and then use a roller over the poster to work out any bubbles.